1,1-Dichloroethylene

Utilities Inc. - Green Brier Water Supply

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Year	Average result	Samples taken	Range of results
2014	ND	4	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	ND	4	ND
2018	N/A	0	N/A
2019	N/A	0	N/A

ppb = parts per billion

EPA Maximum Contaminant
Level (MCL) 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion